John b



UNITED STATES PATENT OFFICE.

JOHN B. SUTHERLAND, OF SYRACUSE, NEW YORK.

STEAM-ENGINE GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 367,461, dated August2, 1887.

Application filed February 17, 1887. Serial No. 227,899. (No model.l

To all whom it may concern:

Be it known that I, JoHN B. SUTHERLAND, of Syracuse, county of Onondaga,in the State of New York, a citizen of the United States, have inventedcertain new and useful Improvements in Steain'Engine Governors, of whichthe following is a specification, reference being had to theaccompanying drawings, in which- Figure l is a side elevation thereof;Fig. 2, a section taken on line at 0:,Fig. 1; Fig. 3, a section taken online y 3 Fig. 1, and Fig. 4 a detail of the eccentric, 820.

Similar letters and figures of reference in dicate corresponding partsthroughout the several views.

My invention relates to that class of governors in which weights (orballs) rotate with and around the main shaft; and it consists of anelliptic or arch spring provided-on one side with a tension-regulator,which is connected to the governorwheel, and the other side of whichspring is connected to an eccentric upon the hub of the governorwvheel,the spring operating with the revolution of the main shaft inconjunction with counterbalanceweights, one being attached to theeccentric and the other to the governor-wheel, said weights beinglocated substantially opposite each other, and the other novel features,hereinafter described and claimed.

It is constructed as follows: A is the governor-wheel, mounted in anydesired manner upon the main shaft B, the wheel being provided with ahub, 1, elongated on one side, as shown.

G is an eccentric fitted to the hub 1 and provided with an arm, 2, bywhich it is secured to the wheel, a bolt, 3, being inserted through itand a spoke of the wheel and screwed up to a proper degree of tightness,or just enough to permit the proper play upon the bolt. Substantially atright angles to this arm I conmeet or secure the weight 4. to theeccentric by rods 5; or the eccentric-arm, two or more arms or rods, andweight may be all integral with each other.

Upon that side of the hub of the eccentric opposite adjacent to theweight 4:, I cut a groove, 6, extending either partly or all of the wayaround the hub, creating the points or flanges 7, and upon these Isecure the base of the arm 8, across the groove 7, the arm projectingoutward. To the outer end of" this arm I connect pivotally one end ofthe angular lever 9, whichis itself pivotally mounted upon a spol e,,10,of the governor-wheel, as shown; and to the other end of this angularleverI pivotall y connect one end of the weight 11, the other end ofwhich is pivotall y mounted upon the spoke 12 of the governor-wheel, sothat by the movement of the eccentric this weight is alternately drawnin from and thrown out toward the periphery of the governorwheel;

Upon the opposite side from the arm 8, and projecting horizontally fromthe spoke 13, is a stud or block, 16, through which I insert verticallya set-screw, 14., the point of which bears either against the spring Dor against a plate, 15, interposed between the set-screw and the spring.

The spring D is an ordinary elliptic or arch spring, the sides of whichlie in the groove 6 in the hub of the eccentric, being held adjustablyon one side by the setscrew 14, by which the tension of the spring isregulated, and being held securely on the opposite side by the base ofthe arm 8, as shown in Fig. 3 of the drawings.

It will be observed that any variation in the tension of the spring bythe set-screw 14 will correspondingly or proportionally vary the speedof the engine; also, as one of the weights is a part of the eccentric,the friction iscorrespondingly reduced as well as the number of parts.

' Having described my invention,what I claim as new, and desire tosecure by Letters Patent, 1s

1. In a governor, the combination of an cecentric mounted upon the mainshaft and having its hub provided with a peripheral groove with anelliptic spring fitting in said groove and operating together,substantially as described.

2. In a governor, a main shaft, an eccentric provided at its hub with aperipheral groove, and an elliptic spring mounted in said groove andencompassing the shaft and eccentric, substantially as described.

3. In a governor, a main shaft, an eccentric having a grooved hub, andan elliptic spring,

both sides of which are seated in the periphery of the eccentric hub,substantially as described.

4. In a governor, a main shaft, an eccentric actuated by the main shaft,an elliptic spring seated in the groove of the eccentric hub, the wheel,and a spring-tension adjuster mounted upon a spoke of the wheel,substantially as described.

5. In a governor, a main shaft, an eccentric having a grooved hub, and aspring seated in said groove and fitting with adjustable contact againsta plate interposed between it and a set-screw, substantially asdescribed.

6. The combination of a wheel, a shaft, a

grooved hubbed eccentric actuated thereby,an

elliptic spring seated in the groove of the hub and thus fitting uponthe eccentric, an arm, 8, connected to the eccentric, and a crankpivoted upon a spoke of the wheel and connected to said arm and to acounterbalance-weight, substantially as described.

arms or rods 5, and suitably secured at its free.

end to a spoke of the wheel, substantially as shown and described.

In witness whereof I liave hereunto set my hand this 1st day ofFebruary, 1887.

JOHN B. SU'IHERL AND.

In presence of NM. 0. RAYMOND, HIRAM CLARK.

